Simplify default configuration.

Put slapos.libnetworkcache and zc.buildout on slapos.core list.

Recent version of slapos.core is capable to reuse such configuration in order
to run provided buildout with all dependencies.

component/slapos/buildout.cfg

@@ -4,7 +4,6 @@ extends =
   ../python-2.7/buildout.cfg
 
 parts =
-  networkcached-buildout
   slapos
 
 find-links =
@@ -18,19 +17,11 @@ python = python2.7
 [slapos]
 recipe = z3c.recipe.scripts
 python = python2.7
-eggs =
-  ${lxml-python:egg}
-  slapos.core
-
-[networkcached-buildout]
-recipe = z3c.recipe.scripts
-python = python2.7
 eggs =
   slapos.libnetworkcache
   zc.buildout
-
-scripts =
-  buildout=buildout_networkache
+  ${lxml-python:egg}
+  slapos.core
 
 [versions]
 zc.buildout = 1.5.3-dev-SlapOS-004